... , Application: natural gas, liquid petroleum gas and coal. commercial IC card gas meterFeature:1, very large flow;2, steel shell, easy ... ;3, prepaid, free-home meter reading;4, data storage, replace the batteries without losing data;5, machinery counter display the accumulate gas ... surplus gas;6, safe and reliable;7, steel shell.Technical data:Nominal flow-rate:6M3/H, 10M3/H, 16M3/H, 25M3 ...